Device is protected with extra seals to prevent failures due to any kind of weather.

3.thickness

10.16mm

8.6mm

8.8mm

8.5mm

12.5mm

Best

Asus Zenfone AR 64GB

4.6mm

4.width

61mm

74.8mm

76.4mm

68.7mm

62mm

Best

Vertu Signature for Bentley

42mm

5.height

120mm

162.5mm

161.9mm

147.7mm

114mm

Best

Motorola FlipOut

67mm

6.has a QWERTY keyboard

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Text messaging is much faster due to a hardware keyboard.

For example

Sharp Aquos R2 Compact

relevant

Display

1.resolution

320 x 480px

1440 x 2960px

1440 x 2960px

1440 x 2960px

320 x 480px

Best

Sony Xperia H8541

2160 x 4320px

2.has branded damage resistant glass

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Damage resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.

3.pixel density

165ppi

521ppi

514ppi

570ppi

165ppi

Best

Sony Xperia H8541

847ppi

4.screen size

3.5"

6.3"

6.4"

5.8"

3.5"

The bigger the screen size is, the better the user experience.

Best

Huawei Mate 20 X

7.2"

5.every pixel has three subpixels

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The device has a display with three full subpixels per pixel, resulting in a sharp and crisp picture. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.

6.Has an AMOLED display

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

AMOLED displays, also known as active matrix OLED displays, offer higher refresh rates and consume less power than other types of displays.

relevant

Performance

1.Has integrated LTE

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.

2.Has integrated graphics

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

With integrated graphics you don’t need to buy a separate graphics card.

3.Uses big.LITTLE technology

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Using big.LITTLE technology, a chip can switch between two sets of processor cores in order to maximise performance and battery life. For example, when playing a game the more powerful cores will be used to increase performance, whereas checking email will use the less powerful cores to maximise battery life.

4.Has out-of-order execution

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Out-of-order execution is used in CPUs to make use of instruction cycles that would normally be wasted due to delays.

5.RAM

0.5GB

6GB

8GB

4GB

0.25GB

Best

Vivo NEX 2

10GB

6.Has AES

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

AES is used to speed up encryption and decryption.

relevant

Cameras

1.megapixels

3MP

12MP & 12MP

12MP & 12MP

12MP

3.15MP

Best

Huawei Mate 20 X

40 & 20 & 8MP

2.has built-in optical image stabilization

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.

3.Has laser autofocus

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

A laser autofocus system quickly determines the depth of the subject you want to focus on, allowing you to take photos much faster.

For example

Huawei Honor Magic 2

4.Has a dual-lens (or multi-lens) main camera

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

A dual-lens camera captures two images and overlays them. This technology creates sharper images, especially in low light conditions, and allows you to use effects such as softening the background.

5.Has phase detection autofocus for photos

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

A phase detection autofocus is much faster than a contrast detection autofocus, allowing for sharper images.

6.has a brand lens

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The lens is made by a reputable photographic equipment manufacturer, as opposed to a low-cost unbranded lens.

For example

Huawei Honor Magic 2

relevant

Audio

1.has stereo speakers

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.

2.has a socket for a 3.5 mm audio jack

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

With a standard mini jack socket, you can use the device with most headphones.

3.number of microphones

1

2

2

2

1

More microphones result in better sound quality and enable the device to filter out background noise.

Best

Motorola Moto Z3

4

4.has a radio

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

It works as an FM radio with included headsets

5.has dedicated media keys

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The music player can be blindly used.

For example

ZTE Nubia X

relevant

Battery

1.battery power

1580mAh

3300mAh

4000mAh

3000mAh

1200mAh

Best

Energizer Power Max P16K Pro

16000mAh

2.Has an ultra power save mode

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The device can save battery by using just a black-and-white screen with a few basic icons. This means even with a small amount of battery, you can keep the device running for a long time.

For example

Oppo A7

3.wireless charging

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.

4.has a removable battery

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

The battery is removable and can be replaced by the user if broken.

5.Supports fast charging

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.

6.has a battery level indicator

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

An indicator shows you when the device has low battery.

relevant

Features

1.Is a multi-user system

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

2.Has offline voice recognition

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Offline voice recognition enables you to perform voice actions, like dictating texts or using various voice commands, without an internet connection.

3.Allows app installs on the device's external storage

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

4.Supports Java

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

5.Is free and open source

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

Anyone is free to use, copy, study, and change the software in any way, and the source code is openly shared so that people are encouraged to voluntarily improve the design of the software.

6.Has sharing intents

Geeksphone Keon

Samsung Galaxy Note 8

Samsung Galaxy Note 9 (Qualcomm Snapdragon 845)

Samsung Galaxy S9

ZTE Open

If an app has sharing capabilities and the developers have indicated it, the app will automatically appear in your list of sharing options. Some OS’s limit direct sharing options to a select few apps, which means you have to open apps separately in order to upload the files you want to share.